/* 前往购买弹窗 */
.mask {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(32, 28, 48, .45); backdrop-filter: blur(4px);
  display: grid; place-items: center; padding: 16px;
  opacity: 0; visibility: hidden; transition: opacity .2s, visibility .2s;
}
.mask.open { opacity: 1; visibility: visible; }
.modal {
  width: 100%; max-width: 460px; max-height: calc(100vh - 32px); overflow: auto;
  border-radius: 26px; padding: 26px; position: relative;
  transform: scale(.96) translateY(8px); transition: transform .25s cubic-bezier(.22, 1, .36, 1);
}
.mask.open .modal { transform: none; }
.modal .close { position: absolute; top: 14px; right: 14px; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; color: var(--muted); }
.modal .close:hover { background: var(--slate); color: var(--ink); }
.m-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px;
  background: var(--coral-soft); color: var(--coral-strong);
}
:root[data-theme="dark"] .m-badge { color: var(--coral); }
.modal h3 { font-size: 22px; margin: 12px 0 6px; line-height: 1.3; }
.modal .m-lead { font-size: 14px; color: var(--muted); }

.m-product { margin-top: 18px; padding: 14px 16px; border-radius: 16px; display: flex; align-items: center; gap: 12px; }
.m-product .pico { width: 42px; height: 42px; border-radius: 12px; background: var(--card); display: grid; place-items: center; font-weight: 900; font-size: 13px; }
.m-product strong { display: block; font-size: 15px; }
.m-product small { font-size: 12px; color: var(--muted); }
.m-product .price { margin-left: auto; font-size: 20px; white-space: nowrap; }

.m-tiers { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.m-tiers button { padding: 5px 12px; border-radius: 999px; font-size: 13px; font-weight: 700; border: 1.5px solid var(--border); }
.m-tiers button.on { border-color: var(--edge); background: var(--ink); color: var(--bg); }

.m-legal { margin-top: 16px; padding: 14px 16px; border-radius: 16px; background: var(--slate); font-size: 13px; color: var(--muted); }
.m-legal b { color: var(--ink); }
.m-legal .lic { display: block; margin-top: 6px; font-size: 12px; }
.m-flow { margin-top: 14px; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 12px; font-weight: 700; }
.m-flow span { padding: 4px 10px; border-radius: 999px; background: var(--butter); }
.m-flow i { font-style: normal; color: var(--muted); }
.m-actions { margin-top: 22px; display: flex; gap: 10px; }
.m-actions .btn-coral { flex: 1; }
.m-actions .ghost { padding: 12px 18px; border-radius: 999px; font-weight: 700; border: 1.5px solid var(--border); }
.m-actions .ghost:hover { border-color: var(--edge); }
.m-note { margin-top: 12px; font-size: 12px; color: var(--muted); text-align: center; }

/* 响应式 */
@media (max-width: 960px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .stage { height: 360px; max-width: 480px; width: 100%; margin: 0 auto; }
  .blob.a { width: 300px; height: 300px; }
  .blob.b { width: 190px; height: 190px; }
  .float-card.f2 { top: 135px; }
  .float-card.f3 { top: 255px; left: 10px; }
  .features, .steps { grid-template-columns: repeat(2, 1fr); }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .help { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .nav { display: none; }
  .hero { padding-top: 24px; }
  .stage { height: 330px; }
  .float-card { min-width: 0; padding: 10px 12px; }
  .float-card.f1 { left: 0; }
  .float-card.f2 { right: 0; }
  .blob.a { width: 240px; height: 240px; right: 0; }
  .features, .steps, .grid, .tiers { grid-template-columns: 1fr; }
  .pcard.span2 { grid-column: auto; }
  .sec-head h2 { font-size: 28px; }
  .help { padding: 24px; }
  .help h2 { font-size: 26px; }
  .modal { padding: 22px 18px; }
  .m-actions { flex-direction: column-reverse; }
  .fab span { display: none; }
}